HSB-431 fix: email case sensitive in email provider (#4042)

* feat: code level email insensitivity added

* test: fix broken test case

* chore: updated testcase for findUserByEmail in user module

---------

Co-authored-by: Balu Babu <balub997@gmail.com>

packages/hoppscotch-backend/src/user/user.service.spec.ts

@@ -149,7 +149,7 @@ beforeEach(() => {
 describe('UserService', () => {
   describe('findUserByEmail', () => {
     test('should successfully return a valid user given a valid email', async () => {
-      mockPrisma.user.findUniqueOrThrow.mockResolvedValueOnce(user);
+      mockPrisma.user.findFirst.mockResolvedValueOnce(user);
 
       const result = await userService.findUserByEmail(
         'dwight@dundermifflin.com',
@@ -158,7 +158,7 @@ describe('UserService', () => {
     });
 
     test('should return a null user given a invalid email', async () => {
-      mockPrisma.user.findUniqueOrThrow.mockRejectedValueOnce('NotFoundError');
+      mockPrisma.user.findFirst.mockResolvedValueOnce(null);
 
       const result = await userService.findUserByEmail('jim@dundermifflin.com');
       expect(result).resolves.toBeNone;

packages/hoppscotch-backend/src/user/user.service.ts

@@ -62,16 +62,16 @@ export class UserService {
    * @returns Option of found User
    */
   async findUserByEmail(email: string): Promise<O.None | O.Some<AuthUser>> {
-    try {
-      const user = await this.prisma.user.findUniqueOrThrow({
-        where: {
-          email: email,
+    const user = await this.prisma.user.findFirst({
+      where: {
+        email: {
+          equals: email,
+          mode: 'insensitive',
         },
-      });
-      return O.some(user);
-    } catch (error) {
-      return O.none;
-    }
+      },
+    });
+    if (!user) return O.none;
+    return O.some(user);
   }
 
   /**